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List: pykde
Subject: [PyQt] Printing QGraphicsScene on printer or pdf file format.
From: Aleksandar Nedeljkovic <sasko2909 () gmail ! com>
Date: 2015-07-18 5:08:32
Message-ID: CAE3nOCQH5Bx=X=uOSCZLy+dferv66qO__A21Anf-5gHoh_ADzQ () mail ! gmail ! com
[Download RAW message or body]
[Attachment #2 (multipart/alternative)]
Hi,
I made an application that uses QGraphicsScene to show some reports. After
that I use QGraphicsScene.render() and QPainter to print content of
QGraphicsScene to printer or pdf file.
And I got confused, because on Centos 6 it all works fine, but on Windows 7
letters are not positioned nicely, different from the contents of
QGraphicsScene.
I made some small test script (in attachment) that does described work.
There is also result of printing of content of QGraphicsScene in pdf file
in Centos 6 (good) and Windows 7 (not good).
Can anybody tell me what I am doing wrong, or is this some problem specific
for Windows. And is there anything that I can do to fix this.
Thanks in advance.
[Attachment #5 (text/html)]
<div dir="ltr"><div><div><div><div><div>Hi,<br><br></div>I made an application that \
uses QGraphicsScene to show some reports. After that I use QGraphicsScene.render() \
and QPainter to print content of QGraphicsScene to printer or pdf \
file.<br><br></div>And I got confused, because on Centos 6 it all works fine, but on \
Windows 7 letters are not positioned nicely, different from the contents of \
QGraphicsScene.<br><br></div>I made some small test script (in attachment) that does \
described work. There is also result of printing of content of QGraphicsScene in pdf \
file in Centos 6 (good) and Windows 7 (not good).<br><br></div>Can anybody tell me \
what I am doing wrong, or is this some problem specific for Windows. And is there \
anything that I can do to fix this.<br><br></div>Thanks in advance.<br></div>
["Report20150718Centos6.pdf" (application/pdf)]
["Report20150718Windows7.pdf" (application/pdf)]
["testreport.py" (text/x-python)]
#!/usr/bin/python
#areareport.py
##import sys
from datetime import date
from PyQt4.QtGui import QDialog, QLabel, QComboBox, QGraphicsScene, \
QGraphicsView, QPushButton, QHBoxLayout, QGridLayout, QPrinter, \
QGraphicsRectItem, QGraphicsTextItem, QFont, QPrintDialog, QPainter, \
QMessageBox, QBrush, QFileDialog, QApplication
from PyQt4.QtCore import QPointF, SIGNAL, QDate, QRectF, Qt
PAGESIZEX = 794
PAGESIZEY = 1123
PAGEMARGINX = 57
PAGEMARGINY = 57
OFFSETX = 25
OFFSETY = 25
################################################################################
# #
# #
################################################################################
class BaseReportDialog(QDialog):
"""
Base class for all reports (archive and current). All common operations
are handled here.
"""
def __init__(self, parent = None):
super(BaseReportDialog, self).__init__(parent)
self.position = QPointF(57, 57)
self.pageNumber = 0
self.tableIndex = 1
self.scene = QGraphicsScene()
self.scene.setItemIndexMethod(QGraphicsScene.NoIndex)
self.view = QGraphicsView()
self.view.setScene(self.scene)
## self.view.setRenderHint(QPainter.Antialiasing)
self.view.setBackgroundBrush(QBrush(Qt.lightGray))
self.setFixedWidth(1000)
saveButton = QPushButton("Save")
finishButton = QPushButton("Finish")
printButton = QPushButton("Print")
self.connect(saveButton, SIGNAL("clicked()"), self.savePDF)
self.connect(printButton, SIGNAL("clicked()"), self.printReport)
self.connect(finishButton, SIGNAL("clicked()"), self.accept)
buttonLayout = QHBoxLayout()
buttonLayout.addStretch()
buttonLayout.addWidget(saveButton)
buttonLayout.addWidget(printButton)
buttonLayout.addWidget(finishButton)
self.mainLayout = QGridLayout()
self.mainLayout.addWidget(self.view, 2, 1, 1, 2)
self.mainLayout.addLayout(buttonLayout, 3, 1, 1, 2)
self.setLayout(self.mainLayout)
self.setMinimumHeight(650)
self.printer = QPrinter(QPrinter.ScreenResolution)
self.restartScene()
## self.printer.setPageSize(QPrinter.Letter)
def addPage(self):
"""
Adds page to report. This function is called when current page is
full and it is needed to start new page.
:param: None
:returns: None
"""
self.pageNumber = self.pageNumber + 1
self.scene.setSceneRect(0, \
0, \
PAGESIZEX + 2 * OFFSETX, \
(PAGESIZEY + 2 * OFFSETY) * self.pageNumber)
yPosition = (PAGESIZEY + 2 * OFFSETY) * (self.pageNumber - 1) + OFFSETY
## pageOffsetItem = QGraphicsRectItem(0, \
## yPosition - OFFSETY, \
## PAGESIZEX + 2 * OFFSETX, \
## PAGESIZEY + 2 * OFFSETY)
## self.scene.addItem(pageOffsetItem)
pageRectItem = QGraphicsRectItem(OFFSETX, \
yPosition, \
PAGESIZEX, \
PAGESIZEY)
pageRectItem.setBrush(QBrush(Qt.white))
self.scene.addItem(pageRectItem)
## pageMarginItem = QGraphicsRectItem(OFFSETX + PAGEMARGINX, \
## OFFSETY + PAGEMARGINY + \
## (2 * OFFSETY + PAGESIZEY) * \
## (self.pageNumber - 1), \
## PAGESIZEX - PAGEMARGINX * 2, \
## PAGESIZEY - PAGEMARGINY * 2)
## self.scene.addItem(pageMarginItem)
textItem = QGraphicsTextItem(str(self.pageNumber))
timesFont = QFont("Times", 12)
textItem.setFont(timesFont)
textItem.setPos((PAGESIZEX - textItem.boundingRect().width()) / 2 + \
OFFSETX, \
(PAGESIZEY + 2 * OFFSETX) * self.pageNumber - 70)
self.scene.addItem(textItem)
redLine = OFFSETY + PAGEMARGINY + (self.pageNumber - 1) * \
(PAGESIZEY + 2 * OFFSETY) + PAGESIZEY - 2 * PAGEMARGINY
self.position.setY((2 * OFFSETY + PAGESIZEY) * (self.pageNumber - 1) + \
PAGEMARGINY + OFFSETY)
def printReport(self):
"""
Prints report on printer or file.
:param: None
:returns: None
"""
## self.printer.setOutputFormat(QPrinter.PdfFormat)
## self.printer.setOutputFileName("nonwritable.pdf")
## self.printer.setFullPage(True)
self.printer.setPaperSize(QPrinter.A4)
printDialog = QPrintDialog(self.printer)
if (printDialog.exec_() == QPrintDialog.Accepted):
painter = QPainter(self.printer)
## painter.setRenderHint(QPainter.Antialiasing)
## painter.setRenderHint(QPainter.TextAntialiasing)
painter.setRenderHint(QPainter.HighQualityAntialiasing)
painter.begin(self.printer)
for i in range(self.pageNumber):
target = QRectF(0, \
0, \
self.printer.\
paperRect(QPrinter.DevicePixel).width(), \
self.printer.\
paperRect(QPrinter.DevicePixel).height())
source = QRectF(OFFSETX, \
(PAGESIZEY + OFFSETY * 2) * i + OFFSETY, \
PAGESIZEX, \
PAGESIZEY)
self.scene.render(painter, target, source)
if i != self.pageNumber - 1:
self.printer.newPage()
painter.end()
def setHeaderAndDate(self):
"""
Sets header of report and date when report is generated.
:param: None
:returns: None
"""
self.position = QPointF(PAGEMARGINX + OFFSETX, PAGEMARGINY + OFFSETY)
timesFont = QFont("Times", 12)
self.position.setY(self.position.y() + OFFSETY)
self.position.setX(self.position.x() + OFFSETX)
titleText = "This text is not formatted nicely on Windows 7."
titleTextItem = QGraphicsTextItem(titleText)
titleTextItem.setFont(timesFont)
titleTextItem.setPos(self.position)
self.scene.addItem(titleTextItem)
self.position.setY(self.position.y() + \
1 * titleTextItem.boundingRect().height())
titleText = "This text is formatted nicely on Centos 6."
titleTextItem = QGraphicsTextItem(titleText)
titleTextItem.setFont(timesFont)
titleTextItem.setPos(self.position)
self.scene.addItem(titleTextItem)
self.position.setY(self.position.y() + \
1 * titleTextItem.boundingRect().height())
def restartScene(self):
"""
Restarts scene on which report is generated.
:param: None
:returns: None
"""
self.scene.clear()
self.pageNumber = 0
self.scene.setSceneRect(0, \
0, \
PAGESIZEX + 2 * OFFSETX, \
PAGESIZEY + 2 * OFFSETY)
self.addPage()
self.setHeaderAndDate()
def savePDF(self):
"""
Saves report (archive or current to .pdf file). File name of saved
report is determined by parameter fileNameString. This function is
called by derived classes.
:param: fileNameString: String that determines name of file in
which report shall be saved.
:type fileNameString: String
:returns None:
"""
fileName = "Report%04d%02d%02d" % \
(date.today().year, \
date.today().month, \
date.today().day)
fileName = QFileDialog.getSaveFileName(self, "Project Handler - " +\
"Save to PDF", fileName, \
"PDF files (*.pdf)")
if fileName.isEmpty() == False:
self.printer.setOutputFormat(QPrinter.PdfFormat)
self.printer.setOutputFileName(fileName)
self.printer.setFullPage(True)
self.printer.setPaperSize(QPrinter.A4)
painter = QPainter(self.printer)
painter.setRenderHint(QPainter.Antialiasing)
painter.setRenderHint(QPainter.TextAntialiasing)
painter.setRenderHint(QPainter.SmoothPixmapTransform)
painter.setRenderHint(QPainter.HighQualityAntialiasing)
painter.setRenderHint(QPainter.NonCosmeticDefaultPen)
painter.begin(self.printer)
for i in range(self.pageNumber):
target = QRectF(0, \
0, \
self.printer.\
paperRect(QPrinter.DevicePixel).width(), \
self.printer.\
paperRect(QPrinter.DevicePixel).height())
source = QRectF(OFFSETX, \
(PAGESIZEY + OFFSETY * 2) * i + OFFSETY, \
PAGESIZEX, \
PAGESIZEY)
self.scene.render(painter, target, source)
if i != self.pageNumber - 1:
self.printer.newPage()
painter.end()
if __name__ == "__main__":
import sys
app = QApplication(sys.argv)
form = BaseReportDialog()
form.show()
app.exec_()
[Attachment #9 (text/plain)]
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